EUVD-2026-78205

Concrete CMS before 9.5.3 applied only trim to the YouTube block's stored width and height values and printed them into iframe HTML attributes without escaping or integer casting, resulting in stored cross-site scripting. A user with editblock permission could inject an event handler that execute...

EUVD-2026-78202

Concrete CMS 8.3.0 to 9.5.2 stored calendar event names without sanitization and rendered them without HTML escaping in the workflow approval and deletion notifications shown in the dashboard "Waiting For Me" block. A registered user permitted to add events to a calendar governed by an approval...

EUVD-2026-78161

Concrete CMS 9.0.0 through 9.5.3 is vulnerable to stored XSS via the custom page alias name customAliasName because the Edit Alias dialog applied only trim to the submitted value and performed no input neutralization. An authenticated user holding canWrite editor permission on a page could store ...

CVE-2026-81900

Concrete CMS before 9.5.3 is affected by a stored cross-site scripting vulnerability in the YouTube block (vWidth/vHeight). The root cause is that only trim() was applied to the stored width and height values before printing them into iframe HTML attributes , without escaping or integer casting. ...

CVE-2026-18116

Concrete CMS versions 8.3.0 through 9.5.2 are affected by a Stored XSS in calendar event names. Event names were stored without sanitization and rendered without HTML escaping in the workflow approval/deletion notifications within the dashboard "Waiting For Me" block. A registered user with permi...

CVE-2026-18117

Concrete CMS 9.0.0 through 9.5.3 contains a stored XSS vulnerability in the custom page alias name (customAliasName) field. The root cause is that the Edit Alias dialog applied only trim() to the submitted value without performing input neutralization. An authenticated user with canWrite (editor)...

CVE-2026-81901

Concrete CMS versions 9.2.0 through 9.5.2 are affected by a stored cross-site scripting (XSS) vulnerability in the REST API page update endpoint (PUT /ccm/api/1.0/pages/{cID} ). The endpoint did not enforce page-property, page-template, or page-type authorization, allowing a user with only conten...

EUVD-2026-78089

In Concrete CMS 9.2.0 through 9.5.2, the REST API page update endpoint PUT /ccm/api/1.0/pages/cID did not enforce page-property, page-template, or page-type authorization. A user granted only content-editing rights on a page could therefore alter its properties, template, and type through the API...

EUVD-2026-78088

Concrete CMS 9 through 9.5.2 did not validate a CSRF token in the orphaned block removal panel action removeOrphanedBlocks. A remote attacker could craft a request that, when loaded by an authenticated user holding edit permission on the target page, deleted every block on that page's current...

CVE-2026-81902

Concrete CMS versions 9.0.0 through 9.5.2 contain a CSRF vulnerability in the orphaned block removal panel action (removeOrphanedBlocks) due to a missing CSRF token validation. A remote attacker can craft a request that, when loaded by an authenticated user with edit permission on the target page...

EUVD-2026-78076

Concrete CMS versions 9.0.0 to 9.5.2 stored the Page Container icon value submitted through the dashboard without validating it against the set of known container icons. The unvalidated value was later concatenated into the src attribute of an img tag by a helper that did not encode attribute...

CVE-2026-81903

Concrete CMS versions 9.0.0 to 9.5.2 are affected by a stored XSS in the Page Container icon field. The unvalidated icon value was concatenated into the src attribute of an tag by a helper that did not encode attribute output, allowing a user with delegated access to the Page Containers dashboar...

CVE-2026-18119

Concrete CMS versions below 9.5.3 are vulnerable to a stored cross-site scripting (XSS) flaw. The root cause is unsanitized custom style values in the Block Design dialog that are written into page CSS via a DOM sink . An editor-level user can inject a payload that executes script in an administr...

CVE-2026-18119 Concrete CMS below 9.5.3 is vulnerable to Stored XSS via unsanitized inline block custom style values

Concrete CMS below 9.5.3 did not sanitize custom style values in the Block Design dialog before writing them into page CSS via a DOM sink, permitting stored cross-site scripting. An editor-level user could execute script in an administrator's session and escalate privileges. The Concrete CMS...

EUVD-2026-77805

Concrete CMS below 9.5.3 did not sanitize custom style values in the Block Design dialog before writing them into page CSS via a DOM sink, permitting stored cross-site scripting. An editor-level user could execute script in an administrator's session and escalate privileges. The Concrete CMS...

CVE-2026-8239

CVE-2026-8239 CVE-2026-8239 是一个不安全的直接对象引用（IDOR）漏洞，影响 Concrete CMS 9.5.0 及更早版本。该漏洞存在于 /ccm/frontend/conversations/getrating 端点中，攻击者通过提供任意消息 ID，即可判断会话消息是否存在并获取其评分。该端点在返回所请求的信息之前未能执行适当的授权检查。 受影响软件 产品：Concrete CMS 受影响版本：9.5.0 及更早版本 修复版本：9.5.1 端点：/ccm/frontend/conversations/getrating 漏洞类型...

CVE-2026-8337

CVE-2026-8337 CVE-2026-8337 是 Concrete CMS 中影响 Survey（调查）功能的一个不安全的直接对象引用（IDOR）漏洞。与 CVE-2026-8347（涉及 Express 关联）不同，该漏洞允许未认证攻击者在特定站点配置下参与受限/私有调查。 概述 Concrete CMS 9.5.0 及更早版本在其调查功能中存在授权缺陷。如果网站同时配置了公开调查和受限（私有）调查，攻击者可以将受限调查的 optionID 提交到公开调查端点。 由于应用程序未能正确验证所提交的 optionID...

CVE-2026-8237

CVE-2026-8237 CVE-2026-8237 是一个不安全的直接对象引用（IDOR）漏洞，由 Concrete CMS 9.5.0 及更早版本中缺失授权检查所致。该缺陷存在于 /ccm/frontend/conversations/messagedetail 端点，该端点仅根据用户提供的消息标识符返回对话消息的完整内容。由于应用程序未验证请求者是否有权访问指定消息，未认证的攻击者可以枚举消息 ID 并检索本应保持私密的对话内容。与这些消息相关的文件附件下载 URL 也可能被披露。该问题已在 Concrete CMS 9.5.1 中修复。 受影响软件 属性| 值 ---|---...

Concrete CMS <9.5.1 - Unauthenticated File-Usage Internal Metadata Disclosure

Concrete CMS 9.5.0 and below is vulnerable to IDOR combined with a missing authentication gate. The endpoint /ccm/system/dialogs/file/usage/fID accepts an integer file ID in the URL and returns internal site structure data page IDs, versions, URL paths to anyone who sends a GET request. id:...

Concrete CMS <9.5.1 - Unauthenticated File Usage Disclosure

Concrete CMS 9.5.0 and below is vulnerable to unauthenticated file usage disclosure via missing permission check in the usage controller. id: CVE-2026-6826 info: name: Concrete CMS 9.5.1 - Unauthenticated File Usage Disclosure author: str4k3r severity: medium description: | Concrete CMS 9.5.0 and...